R&D Report 1993-14 : RINSE: a digitally implemented flywheel sync regenerator for improved video synchroniser performance. R.H.Evans Microwave links are widely used at live outside broadcast events for carrying video signals from mobile cameras such as those carried on the shoulder or fitted to vehicles. A digital frame store synchroniser is required when using a remote radio-camera and this has caused additional problems with variable quality signals. During moments of weak signal strength when threshold noise appears in the picture, a video synchroniser may lose synchronisation and produce an unnatural freeze-frame effect. A new device called RINSE - Regeneration and Insertion of New Sync Equipment - is described, which replaces the old variable quality syncs with 'flywheel' regenerated syncs. When connected between the microwave receiver and the synchroniser, it cleans up the syncs and allows the synchroniser to pass the video without the freeze frame artefacts which would further degrade the picture. By operating the synchroniser with an external sync input from RINSE, it will carry any video signal transparently for a short time irrespective of the noise level.